2778604 has 6 divisors (see below), whose sum is σ = 4862564. Its totient is φ = 1389300.

The previous prime is 2778583. The next prime is 2778619. The reversal of 2778604 is 4068772.

It is a self number, because there is not a number n which added to its sum of digits gives 2778604.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347322 + ... + 347329.

2^2778604 is an apocalyptic number.

It is an amenable number.

2778604 is a deficient number, since it is larger than the sum of its proper divisors (2083960).

2778604 is a wasteful number, since it uses less digits than its factorization.

2778604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694655 (or 694653 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 2778604 is about 1666.9145149047. The cubic root of 2778604 is about 140.5860467582.

The spelling of 2778604 in words is "two million, seven hundred seventy-eight thousand, six hundred four".